Thirds to wise brothers



(No Model.) 2 Sheets-Shet 1.. W. 0. GRAIN. SEWING MACHINE- ,N0.-376,978. PatentedJan.Z4,'1888 INVENTQR C 10"" WITNESSES (No Model.) 'I sheets shet W. O. GRAIN.

' SEWING MACHINE. No. 376,978; Patented Jam. 24, 13 3.

WITNESSES: r INVENTOR:

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UNITED STATES PATENT QFFICE WILLIAM OLIVER QRAIN, OF BALTIMORE'MARYLAND,

THIRDS TO WISE BROTHERS, OF SAME PLACE.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 376,978, dated January 24, 1 888. I Application filed March 14, 1887. Serial No. 230,771. (No model.) v V I 5 vented certain new and useful Improvements in Sewing-Machines, of which the followingis a specification. I

This invention relates to vimprovements in sewing-machines of the oscillating-shuttle class, and has for its object to combine in a machine the following several features, to wit a bed-plate arm, an oscillating shuttle, and a feed device which will feed the goods lengthwise of the arm; By combining these features I 5 a machine is produced that is adapted for sew ing felled seams on the legs of pants, overalls, and drawers, and on the arms of coats and shirts, and which at the same time may be run at higher speed than is-possible with other machines which have heretofore been used for such Work. I I I The invention is illustrated in the accompanying drawings, in which t Figure 1 is for the most part a sectional elevation of a machine embodying my improvements. Fig. 2 is an inverted plan or bottom view of the machine. Fig. 3 is a top View of the arm of the machine, showing the feed-bar. Fig. 4 is asectionalview of the main shaft and 0 cam and feed-lever moved'by the said cam.

Fig. 5 is a cross-section of the arm and oscillating shaft on the line 5 5. Fig. 6 is a view of the feed device attached. Fig. 7 is an end view of the arm, showing the oscillating shut- Fig. 8 is a side view of the sewing-machine, showing one leg of a pair of overalls on the-arm, as in the operation of felling the seam, I

It will be unnecessary to describe any of the 0 well-known parts of the machine, except such 5 arm, I), on a rock-shaft, If, situated in the base 0 of the machine. ,The bed-plate arm 0 is attached to the base, and the garment to be I sewed is to be drawn over this'arm, as in-Fig.

8. The oscillating shuttle-shaft D turns in .50 bearings d in the arm, and at one end has the carrier 6, which holds and moves the shuttle f crosswise of the arm, and at the other end has a crank-arm, g. The rock-shaft before referred to, has a grooved arm, I), which re ceives the crank-arm g on the oscillating shaft 5 I D. A lever, c, connects-the cam c onthe' main shaft with my combined feed mechanism in the base of the machine. This feed-lever c is attached to a link-bar, c, and at its upper end has two'prongs, 0 each of whichtakes "6 on an opposite side of the cam a. The feedregulator screw to in the slot 10 of the stand- 1 ard E is attached (see Fig. 8) to one end ofa lever, x, which is centrally pivoted to the said standard, and the other end of the said lever is jointed at y to the said link-bar 0 This'device is well known and determinesthe has'its lower end connected with the said arm 1;. Thus the. cam 0, through the connecting feed-lever c, imparts the desired movementto I the second rock-shaft, h, The needleaplat'e k on the arm 0 has a hole, -Z, for thevneedlelr AssieNoR on TWO- My improvement efiects a I combine the said parts so 75 This rock-shaft has an The serrated end of'the feed-dog m has the Y .felled seam on the legs of pants or overallsthe 0 I goods will be fed toward the standard E, which supports the top or head '13. v The oscillating shuttlef, which has great'rapidityof movement, is in the carrier e, directly below the needle-plate k. The end of the feed-dog m is pivoted at n to a slide-box, 0, which is seated on two bearings, p, whereon it reciprocatesin a direction length wise of the arm 0. y The feed slide-box 0 and the second rock-shaft, h, both I I extend lengthwise in the same direction, and

are connected by mechanism whereby the movement of said shaft h imparts the forwardand-back motion to the feedbar. This connecting mechanism comprises a rod, q, attached by one end to the slide-box 0 and by the other toa bell'crank lever, r, and a crank-arm, 's, on the second rock-shaft, h, attached to the said bell-crank lever.

The mechanism for imparting the up-anddown motion to the feed-bar m comprises a thin bowed spring, t, placed on top of the feedbar and covered-and confined in place by the ordinary slide-plate, a. This spring presses on the feed-bar and serves to keep it normally down. A cam, 12, on the oscillating shuttleshaft D has position between the two bearings 19 and serves to give the up motion to the feedbar.

It will be seen that [have constructed a machine having a bed-plate arm, 0, an oscillating shuttle, f, moving crosswise of the said arm, anda feed device which moves the goods lengthwise of the arm.

Having described my invention, I claim and desire to secure by Letters Patent of the United States In a sewingmachine, the combination of a bed-plate arm, 0, a main shaft, A, in the head B of the machine, provided with a crank, b, and a cam, 0', an oscillating shaft, D, moving a shuttle, f, crosswise of the arm and having a feed-bar cam, 12, a feed device which moves the goods lengthwise of the said arm, a rock shaft, I)", connected with the said oscillating shuttle-shaft, a second rock-shaft, h, to impart a forward-and-back motion to the feed device, a rod, I), connecting the crank on the main shaft with the rock-shaft I), and a lever, 0', connecting the cam on the main shaft with the second rock-shaft, h,- for the purpose set forth.

In testimony whereofI aflix my signature in the presence of two witnesses.

\VM. OLIVER GRAIN. \Vitnesses: I

JOHN E. MoRRIs, JNO. T. MADDoX. 

